I have a Mitsubishi Vs-5004R that when powered on the screen is completly green.

I woke up to this problem after the TV had been working perfectly the night before. It was shut off when i went to bed.

After removing the screen i see that only the green projection bulb is coming on. If any of you folks have information (service manual) or experience with this issue your help would be greatly appreciated!

I am aware the this TV is very old (mfg date 1991) and probably not worth putting any money into however i would like to try to repair it as i have experience with electronics and circuit boards, I have just never worked on a TV before.

i have found that when i change inputs to ext-2 i do get all three tubes to come on when you get to the code entry screen (because that input is locked with a code you have to enter) however the normally green lettering (against a blue background) for that code entry screen is washed across the screen almost smeared looking.

As i am sitting here typing the TV just shut off on its own. after being on that ext-2 screen for approx 5 minutes.

I have also checked to make sure that the green tubes coolant has not leaked on to the crt board. as of yet i have found no cold solder joints on any of the three boards (but i just started looking with the green one)